Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Cesar H Proano, MD

Hematology & Oncology Physician in Arecibo, PR · enumerated 2007 · practices at Centro Hema-Oncologico Del Norte.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1700926755

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Registry record

Entity type Individual (Type 1)

Name Dr. Cesar H Proano

Credential MD

Sex Male

Practice address 8 Calle Coballes Gandia, Urb. Villamar, Arecibo, PR, 00612

Phone (787) 878-7086

Enumeration date Feb 7, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

207RH0003X Hematology & Oncology Physician Allopathic & Osteopathic Physicians · License 5102 (PR) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
26467PR	Other	PR	SSS
991164	Other	PR	MMM
068193	Other	PR	CRUZ AZUL
9180083	Other	PR	HUMANA
211011	Other	PR	PREFERRED
4905102	Other	PR	UIA

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Cesar Proano?

Cesar Proano is registered in NPPES with the primary taxonomy of Hematology & Oncology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Centro Hema-Oncologico Del Norte Specialist · Arecibo, PR NPI 1316955479 Luis Nunez Case Manager/Care Coordinator · Arecibo, PR NPI 1992843569

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.